
-- Structural and utility functions go in this file.

function SNFGetVersion()
	return "1.0"
end

local scount = 0

function SnFDKP_OnUpdate()

	if not scount then scount = 1 end

	scount = scount + 1
	if mod(scount, 10) == 0 then
		SNFMessage:CheckSync()
	end
	if mod(scount, 600) == 0 then
		if SNFAttend then -- sometimes this fires before all files are loaded??
			SNFAttend:ScanRaidForAttendChanges()
		end
	end
end

function SnFDKP_OnLoad()
	SNFDEBUG(1,"Loading...");

	SlashCmdList["SNFDKP"] = SNFDKP_OptionsWrap;
	SLASH_SNFDKP1 = "/SNFDKP";
	SLASH_SNFDKP2 = "/SNF";

	SlashCmdList["SNFADD"] = SNFDKP_AddDKPWrap;
	SLASH_SNFADD1 = "/SNFADD";

	CHAT_PREFIX = "SNFDKP";
--	CHAT_PREFIX_SYNC = "SNFDKPSYNC";
	CHAT_PREFIX_SMSYNC = "SNFDKPSMSYNC";
	SNFDKP_Register()
	SNFDEBUG(0,"Loaded.");
end

function SNFDKP_Register()
	SNFDKPFrame:RegisterEvent("VARIABLES_LOADED");
	SNFDKPFrame:RegisterEvent("CHAT_MSG_LOOT");
	SNFDKPFrame:RegisterEvent("CHAT_MSG_ADDON");
	SNFDKPFrame:RegisterEvent("CHAT_MSG_RAID");
	SNFDKPFrame:RegisterEvent("CHAT_MSG_PARTY");
	SNFDKPFrame:RegisterEvent("CHAT_MSG_SAY");
	SNFDKPFrame:RegisterEvent("CHAT_MSG_RAID_WARNING");
	SNFDKPFrame:RegisterEvent("CHAT_MSG_RAID_LEADER");
	SNFDKPFrame:RegisterEvent("CHAT_MSG_WHISPER");
	SNFDKPFrame:RegisterEvent("GUILD_ROSTER_UPDATE");
--	SNFDKPFrame:RegisterEvent("CHAT_MSG_MONEY");
--	SNFDKPFrame:RegisterEvent("LOOT_BIND_CONFIRM");
--	SNFDKPFrame:RegisterEvent("LOOT_OPENED");
--	SNFDKPFrame:RegisterEvent("LOOT_SLOT_CLEARED");
--	SNFDKPFrame:RegisterEvent("OPEN_MASTER_LOOT_LIST");
--	SNFDKPFrame:RegisterEvent("UPDATE_MASTER_LOOT_LIST");
--	SNFDKPFrame:RegisterEvent("CANCEL_LOOT_ROLL");
--	SNFDKPFrame:RegisterEvent("PLAYER_ENTERING_WORLD");
	if SNFDKP_Options then
		SNFOptions["Status"] = "on"
	end
end

function SNFDKP_RaidRegisterEvents()
	--this:SNFDKPFrame:RegisterEvent("PARTY_MEMBERS_CHANGED");
	--SNFDKPFrame:RegisterEvent("RAID_ROSTER_UPDATE");
	--SNFDEBUG(0, "Raid party member event registered")
end

function SNFDKP_RaidUnregisterEvents()
	--SNFDKPFrame:UnRegisterEvent("PARTY_MEMBERS_CHANGED");
	--SNFDKPFrame:UnRegisterEvent("RAID_ROSTER_UPDATE");
	--SNFDEBUG(0, "Raid party member event unregistered")
end

function SNFDKP_Unregister()
	SNFDKPFrame:UnRegisterEvent("VARIABLES_LOADED");
	SNFDKPFrame:UnRegisterEvent("CHAT_MSG_LOOT");
	SNFDKPFrame:UnRegisterEvent("CHAT_MSG_ADDON");
	SNFDKPFrame:UnRegisterEvent("CHAT_MSG_RAID");
	SNFDKPFrame:UnRegisterEvent("CHAT_MSG_PARTY");
	SNFDKPFrame:UnRegisterEvent("CHAT_MSG_SAY");
	SNFDKPFrame:UnRegisterEvent("CHAT_MSG_RAID_WARNING");
	SNFDKPFrame:UnRegisterEvent("CHAT_MSG_WHISPER");
	SNFDKPFrame:UnRegisterEvent("OPEN_MASTER_LOOT_LIST");
	SNFDKPFrame:UnRegisterEvent("GUILD_ROSTER_UPDATE");
	SNFDKPFrame:UnRegisterEvent("PARTY_MEMBERS_CHANGED");

	SNFDKPFrame:UnRegisterEvent("PARTY_MEMBERS_CHANGED");
	SNFDKPFrame:UnRegisterEvent("RAID_ROSTER_UPDATE");

	if SNFDKP_Options then
		SNFOptions["Status"] = "off"
	end
end

function SNFDKP_OptionsWrap(...)
	SNFDKP_Options(...)
end

function SNFDKP_AddDKPWrap(...)
	SNFDKP_AddDKP(...)
end

function SNFCheckDefaultsWrap()
	SNFCheckDefaults()
end

function SNFCheckGuildRosterInfoWrap()
	SNFCheckGuildRosterInfo()
end

function SnFDKP_OnEvent(self, event, arg1, arg2, arg3, arg4)

	if  event == "VARIABLES_LOADED"  then
		bVarsLoaded = true;
		SNFCheckDefaultsWrap()
		SNFInitializeParser()
		return
	elseif event == "CHAT_MSG_ADDON" then
		SNFHandleAddonChatEvent(arg1, arg2, arg3, arg4);
		return
	elseif event == "CHAT_MSG_LOOT" then
		-- improvement, only send on loot messages if we recognize them.
		if SNFParseLootMsg(UnitName("player"), arg1) then
			SendAddonMessage(CHAT_PREFIX, arg1, RAID, nil)
		end
		return
	elseif event == "CHAT_MSG_RAID" or event == "CHAT_MSG_PARTY" or event == "CHAT_MSG_SAY"
		or event == "CHAT_MSG_RAID_WARNING" or event == "CHAT_MSG_RAID_LEADER" or event == "CHAT_MSG_PARTY_LEADER" then
		SNFHandleGroupChatEvent(arg1, arg2)
		return
	elseif event == "CHAT_MSG_WHISPER" then
		SNFHandleWhisperEvent(arg1, arg2)
		return
	elseif event == "OPEN_MASTER_LOOT_LIST" or event == "OPEN_MASTER_LOOT_LIST" then
--		SNFTestMasterLoot(...)
		return
	elseif event == "LOOT_OPENED" or event == "LOOT_CLOSED" then
--		SNFTestMasterLoot2(...)
		return
	elseif event == "GUILD_ROSTER_UPDATE" then
		SNFCheckGuildRosterInfoWrap()
		return
	elseif event == "PARTY_MEMBERS_CHANGED" or event == "RAID_ROSTER_UPDATE" then
		SNFAttend:ScanRaidForAttendChanges()
		return
	else
		SNFDEBUG(3,"Unhandled event: "..(event or "nil"))
	end
end

function SNFDEBUG(level, msg)
	-- not bVarsLoaded protects this against running when all functions aren't loaded
	if type(level) ~= "number" then
		DEFAULT_CHAT_FRAME:AddMessage("SNFDKP BADLEVEL: "..(msg or "nil"))
		DEFAULT_CHAT_FRAME:AddMessage(debugstack())
		return
	end
	if (not bVarsLoaded or level <= SNFGetDebugLevel()) then
		DEFAULT_CHAT_FRAME:AddMessage("SNFDKP: "..msg)
	end
end

function SNFOFFICER(msg)
	-- not bVarsLoaded protects this against running when all functions aren't loaded
	SendChatMessage((msg or ""), "OFFICER" )
	DEFAULT_CHAT_FRAME:AddMessage("SNFDKP: "..msg)
end

function SNFGetItemID(loot)
	if loot then

		itemString, name = strmatch(loot, "|c%x+|H(.+)|h(.+)|h|r")

		if itemString and name then
--			SNFDEBUG(4,"Found: "..itemString..", "..name)
			local val = strmatch(itemString, "item:(%d+):.*")
			if not val and loot then
				SNFDEBUG(1, "NO ITEMID FOUND FOR: "..gsub(loot, "\124", "\124\124"))
			end
			return val
		else
			SNFDEBUG(1,"NO ITEMSTRING FOR: "..gsub(loot, "\124", "\124\124"))
		end
	end
	return ""
end

function SNFGetItemLevel(itemid)
	if itemid then
		local itemName, itemLink, itemRarity, itemLevel, itemMinLevel, itemType, itemSubType, itemStackCount,
		itemEquipLoc, itemTexture, itemSellPrice = GetItemInfo(itemid)
		return itemLevel;
	else
		SNFDEBUG(3, "Unable to get itemlevel for "..(itemid or "nil"))
	end
	return 0
end

function SNFGetDisplayStringFromItemID(itemid)
	local _, itemLink = GetItemInfo(itemid);
	if itemLink then
		SNFDEBUG(3,"ITEMID#Generated: "..itemLink)
		return itemLink
	else
		SNFDEBUG(3, "ITEMD#None for "..itemid)
	end
	return "item:"..(itemid or "nil")
end

function SNFPRINT(d, name, value, depth)
	local plist = { }
	local indent = " "
	SNFPRINTHELP2(name, value, indent, plist, (depth or 99))

	for i, txt in ipairs(plist) do
		SNFDEBUG(d, txt)
	end
end

function SNFPRINTHELP(name, value, indent, plist)

	if type(value) == "nil" then
		tinsert(plist, indent..(name or "nil").."=nil")
		return
	end
	if type(value) == "number" or
	   type(value) == "string" or
	   type(value) == "boolean" then
		tinsert(plist, indent..name.."="..value)
		return
	end
	if type(value) == "function" then
		tinsert(plist, indent..name.."=function")
		return
	end
	if type(value) == "thread" then
		tinsert(plist, indent..name.."=thread")
		return
	end
	if type(value) == "userdata" then
		tinsert(plist, indent..name.."=userdata")
		return
	end
	if type(value) == "table" then
		tinsert(plist, indent..name.."= {")
		for key, val in pairs(value) do
			SNFPRINTHELP(key, val, indent.."  ", plist)
		end
		tinsert(plist, indent.."}")
	end
end


function SNFPRINTHELP2(name, value, indent, plist, depth)

	if not depth or depth == 0 then return end

	if type(value) == "nil" then
		tinsert(plist, indent..(name or "nil").."=nil")
		return
	end
	if type(value) == "number" or
	   type(value) == "string" or
	   type(value) == "boolean" then
		tinsert(plist, indent..name.."="..value)
		return
	end
	if type(value) == "function" then
		tinsert(plist, indent..name.."=function")
		return
	end
	if type(value) == "thread" then
		tinsert(plist, indent..name.."=thread")
		return
	end
	if type(value) == "userdata" then
		tinsert(plist, indent..name.."=userdata")
		return
	end
	if type(value) == "table" then
		if false and #(value) < 2 then  -- shorten the display if there is only 1 value in the list
			local msg = "= {"
			local used = true
			for key, val in pairs(value) do
				if type(val) == "table" then
					tinsert(plist, indent..name.."= {")
					SNFPRINTHELP2(key, val, indent.."  ", plist, (depth or 1) -1)
					tinsert(plist, indent.."}")
					used = false
				else
					if type(value) == "boolean" then
						local vv = "true"
						if not val then vv = "false"
							msg = msg.." "..key.."="..vv..","
						else
							msg = msg.." "..key.."="..val..","
						end
					end
				end
			end
			if used then
				msg = msg.." }"
				tinsert(plist, indent..msg)
			end
			return
		else
			tinsert(plist, indent..name.."= {")
			for key, val in pairs(value) do
				SNFPRINTHELP2(key, val, indent.."  ", plist, (depth or 1) -1)
			end
			tinsert(plist, indent.."}")
		end
	end
end

 function SNFtcopy(to, from)   -- "to" must be a table (possibly empty)
   for k,v in pairs(from) do
     if(type(v)=="table") then
       to[k] = {}
       SNFtcopy(to[k], v);
     else
       to[k] = v;
     end
   end
 end

 function SNFRound(num)

   if type(num) ~= "number" then return "NaN" end

   if (num - floor(num)) >= .5 then return floor(num) + 1 end

   return floor(num)
 end

local bit_band, bit_bxor, bit_rshift, str_byte, str_len = bit.band, bit.bxor, bit.rshift, string.byte, string.len
local consts = { 0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA, 0x076DC419, 0x706AF48F, 0xE963A535, 0x9E6495A3, 0x0EDB8832, 0x79DCB8A4, 0xE0D5E91E, 0x97D2D988, 0x09B64C2B, 0x7EB17CBD, 0xE7B82D07, 0x90BF1D91, 0x1DB71064, 0x6AB020F2, 0xF3B97148, 0x84BE41DE, 0x1ADAD47D, 0x6DDDE4EB, 0xF4D4B551, 0x83D385C7, 0x136C9856, 0x646BA8C0, 0xFD62F97A, 0x8A65C9EC, 0x14015C4F, 0x63066CD9, 0xFA0F3D63, 0x8D080DF5, 0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172, 0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B, 0x35B5A8FA, 0x42B2986C, 0xDBBBC9D6, 0xACBCF940, 0x32D86CE3, 0x45DF5C75, 0xDCD60DCF, 0xABD13D59, 0x26D930AC, 0x51DE003A, 0xC8D75180, 0xBFD06116, 0x21B4F4B5, 0x56B3C423, 0xCFBA9599, 0xB8BDA50F, 0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924, 0x2F6F7C87, 0x58684C11, 0xC1611DAB, 0xB6662D3D, 0x76DC4190, 0x01DB7106, 0x98D220BC, 0xEFD5102A, 0x71B18589, 0x06B6B51F, 0x9FBFE4A5, 0xE8B8D433, 0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818, 0x7F6A0DBB, 0x086D3D2D, 0x91646C97, 0xE6635C01, 0x6B6B51F4, 0x1C6C6162, 0x856530D8, 0xF262004E, 0x6C0695ED, 0x1B01A57B, 0x8208F4C1, 0xF50FC457, 0x65B0D9C6, 0x12B7E950, 0x8BBEB8EA, 0xFCB9887C, 0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, 0xFBD44C65, 0x4DB26158, 0x3AB551CE, 0xA3BC0074, 0xD4BB30E2, 0x4ADFA541, 0x3DD895D7, 0xA4D1C46D, 0xD3D6F4FB, 0x4369E96A, 0x346ED9FC, 0xAD678846, 0xDA60B8D0, 0x44042D73, 0x33031DE5, 0xAA0A4C5F, 0xDD0D7CC9, 0x5005713C, 0x270241AA, 0xBE0B1010, 0xC90C2086, 0x5768B525, 0x206F85B3, 0xB966D409, 0xCE61E49F, 0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4, 0x59B33D17, 0x2EB40D81, 0xB7BD5C3B, 0xC0BA6CAD, 0xEDB88320, 0x9ABFB3B6, 0x03B6E20C, 0x74B1D29A, 0xEAD54739, 0x9DD277AF, 0x04DB2615, 0x73DC1683, 0xE3630B12, 0x94643B84, 0x0D6D6A3E, 0x7A6A5AA8, 0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 0x7D079EB1, 0xF00F9344, 0x8708A3D2, 0x1E01F268, 0x6906C2FE, 0xF762575D, 0x806567CB, 0x196C3671, 0x6E6B06E7, 0xFED41B76, 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC, 0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5, 0xD6D6A3E8, 0xA1D1937E, 0x38D8C2C4, 0x4FDFF252, 0xD1BB67F1, 0xA6BC5767, 0x3FB506DD, 0x48B2364B, 0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6, 0x41047A60, 0xDF60EFC3, 0xA867DF55, 0x316E8EEF, 0x4669BE79, 0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236, 0xCC0C7795, 0xBB0B4703, 0x220216B9, 0x5505262F, 0xC5BA3BBE, 0xB2BD0B28, 0x2BB45A92, 0x5CB36A04, 0xC2D7FFA7, 0xB5D0CF31, 0x2CD99E8B, 0x5BDEAE1D, 0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x026D930A, 0x9C0906A9, 0xEB0E363F, 0x72076785, 0x05005713, 0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38, 0x92D28E9B, 0xE5D5BE0D, 0x7CDCEFB7, 0x0BDBDF21, 0x86D3D2D4, 0xF1D4E242, 0x68DDB3F8, 0x1FDA836E, 0x81BE16CD, 0xF6B9265B, 0x6FB077E1, 0x18B74777, 0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C, 0x8F659EFF, 0xF862AE69, 0x616BFFD3, 0x166CCF45, 0xA00AE278, 0xD70DD2EE, 0x4E048354, 0x3903B3C2, 0xA7672661, 0xD06016F7, 0x4969474D, 0x3E6E77DB, 0xAED16A4A, 0xD9D65ADC, 0x40DF0B66, 0x37D83BF0, 0xA9BCAE53, 0xDEBB9EC5, 0x47B2CF7F, 0x30B5FFE9, 0xBDBDF21C, 0xCABAC28A, 0x53B39330, 0x24B4A3A6, 0xBAD03605, 0xCDD70693, 0x54DE5729, 0x23D967BF, 0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94, 0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D }

--Credit for this goes to Allara@wowace, http://forums.wowace.com/showthread.php?t=15001
-- Thanks!!
function SNFCRC32(s)
 local crc, l, i = 0xFFFFFFFF, str_len(s)
 for i = 1, l, 1 do
  crc = bit_bxor(bit_rshift(crc, 8), consts[bit_band(bit_bxor(crc, str_byte(s, i)), 0xFF) + 1])
 end
 return bit_bxor(crc, -1)
end

function SNFGenerateFlatListChecksum(lst)

	local sum = 0
	if not lst then return 0 end
	for _,text in ipairs(lst) do
		local s = 0
		for i = 1, strlen(text), 1 do
			s = s + string.byte(text, i)
		end
		SNFDEBUG(4, "Simple checksum for "..(text or "nil").." is "..s)
		sum = sum + s
	end
	return sum
end

